/*
 * This file is part of Applied Energistics 2. Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved. Applied
 * Energistics 2 is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General
 * Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
 * later version. Applied Energistics 2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
 * Public License for more details. You should have received a copy of the GNU Lesser General Public License along with
 * Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.core.sync.packets;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.nbt.CompressedStreamTools;
import net.minecraft.nbt.NBTTagCompound;

import appeng.core.sync.AppEngPacket;
import appeng.core.sync.network.INetworkInfo;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;

public class PacketCompressedNBT extends AppEngPacket {

    // input.
    private final NBTTagCompound in;
    // output...
    private final ByteBuf data;
    private final GZIPOutputStream compressFrame;

    // automatic.
    public PacketCompressedNBT(final ByteBuf stream) throws IOException {
        this.data = null;
        this.compressFrame = null;

        final GZIPInputStream gzReader = new GZIPInputStream(new InputStream() {

            @Override
            public int read() throws IOException {
                if (stream.readableBytes() <= 0) {
                    return -1;
                }

                return stream.readByte() & 0xff;
            }
        });

        final DataInputStream inStream = new DataInputStream(gzReader);
        this.in = CompressedStreamTools.read(inStream);
        inStream.close();
    }

    // api
    public PacketCompressedNBT(final NBTTagCompound din) throws IOException {

        this.data = Unpooled.buffer(2048);
        this.data.writeInt(this.getPacketID());

        this.in = din;

        this.compressFrame = new GZIPOutputStream(new OutputStream() {

            @Override
            public void write(final int value) throws IOException {
                PacketCompressedNBT.this.data.writeByte(value);
            }
        });

        CompressedStreamTools.write(din, new DataOutputStream(this.compressFrame));
        this.compressFrame.close();

        this.configureWrite(this.data);
    }

    @Override
    @SideOnly(Side.CLIENT)
    public void clientPacketData(final INetworkInfo network, final AppEngPacket packet, final EntityPlayer player) {}
}
